alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed FIN7 CnC Domain (injuryless .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"injuryless.com"; bsize:14; fast_pattern; reference:url,twitter.com/ShadowChasing1/status/1403150596849295362; reference:md5,1ac719c744d22f42e4978e7b55828435; reference:md5,526d56017ef5105277fe0d366c95c39d; classtype:domain-c2; sid:2033138; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_06_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_11, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)